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Mathematics
OpenStudy (anonymous):

Determine whether y varies directly with x. If so, find the constant of variation k and write the equation. x y 4 6.4 7 11.2 10 16 13 20.8

OpenStudy (anonymous):

k = y/ x

OpenStudy (anonymous):

so what should i do

OpenStudy (anonymous):

it varies directly. to get the constant divide a y value by its corresponding x value

OpenStudy (anonymous):

6.4/4=1.6=k

OpenStudy (anonymous):

yes. that's right

OpenStudy (anonymous):

so i do that to all of them and that all

OpenStudy (anonymous):

yes. They will all give you the same answer. That shows its directly proportional

OpenStudy (anonymous):

thanks

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